(19)
(11) EP 1 258 021 A1

(12)

(43) Date of publication:
20.11.2002 Bulletin 2002/47

(21) Application number: 01906865.9

(22) Date of filing: 01.02.2001
(51) International Patent Classification (IPC)7H01J 1/304
(86) International application number:
PCT/US0103/283
(87) International publication number:
WO 0105/9800 (16.08.2001 Gazette 2001/33)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 09.02.2000 US 501071

(71) Applicant: MOTOROLA, INC.
Schaumburg, IL 60196 (US)

(72) Inventors:
  • TAM, Gordon
    Gilbert, AZ 85296 (US)
  • QIN, Ganming
    Chandler, AZ 85224 (US)
  • O'BRIEN, Barry, B.
    Chandler, AZ 85226 (US)

(74) Representative: McCormack, Derek James et al
MotorolaEuropean Intellectual Property OperationsMidpointAlencon Link
BasingstokeHampshire RG21 7PL
BasingstokeHampshire RG21 7PL (GB)

   


(54) FIELD EMISSION DEVICE HAVING AN IMPROVED BALLAST RESISTOR